Document holder for attachment to a computer keyboard



FIG. 1 is a front perspective view of a document holder for attachment to a computer keyboard, showing our new design thereof, the monitor and keyboard are shown in broken lines for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof, the left side being a mirror image; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for document holder for attachment to a computer keyboard, as shown and described. 